Boss 13, 14 - Basileus, Achidna | Basileus Darksiders 2 Guide
Last update: 11 May 2016
The battle has two separate bosses cooperating with each other, but Basileus himself will attack you first. He's very agile and it's crucial to avoid his characteristic charge, in which he runs forward in a straight line witch very great speed. The most obvious way to avoid getting hit is to keep moving around and dodge frequently.
Basileus also likes to attack Death from air. Again, the attack is very fast, though easier to dodge than the charge.
The last of Basileus' basic attacks is a mighty slam on the ground, and you should know very well how to react when it happens - quickly back away from the landing spot, jumping to the side if needed.
As much as the variety of Basileus' attacks may cause some problems at the beginning, there are no complications as to how to hit him. Use your primary scythe strikes, as well any available special attacks. It's also recommended to pull yourself to him with Death Grip, which works best if you have Basileus targeted.
After dealing him enough damage, Basileus will back out from the battlefield to mount the second boss - Achidna. This is when the second stage of the battle begins.
[TIP: Notice that both bosses have the same health bar - this is the reason why you have to treat them as a singular threat.]
Similarly to Basileus, Achidna also likes to jump and charge at you with great speed, though due to its huge sizes these attacks are not easy to dodge. I suggest acting suitably earlier and dodge repeatedly until you're safe.
The second of Achidna's basic attacks involves attacking when you're directly in front of it (the above screen). Make sure you don't stay too close to it too often to prevent the loss of a substantial amount of health.
The best way to weaken Achidna is to hit it with normal attacks, especially since you can't easily pull yourself to it. It's also a good idea to use the pistol, particularly when Achidna moves away from Death.
I also recommend using the Reaper Form, thought it's not necessary to win (only to cut the battle short). Keep attacking Achidna until you trigger a short cutscene in which it throws Basileus off its back (the above screen). The third stage of the battle begins.
In the third stage, focus on hitting Basileus, keeping all of the above things in mind. The struggle will be made additionally difficult by the now "independent" Achidna, which will be continuously landing in random parts of the arena (the above screen). Consequently, maintain constant mobility and dodge as often as possible. Keep attacking Basileus until you trigger another cutscene and open the last stage of the battle.
The fourth stage is very similar to the third, with Achidna being the main opponent now (focus solely on it) and Basileus attacking you at random. Same as before, keep moving around the battlefield all the time and dodge frequently.
Draining the boss' shared health bar will ensure your victory. Your reward will be Basileus' pledge of obedience to the Lord of Bones and a new weapon - Achidna's Fangs.
[TIP: Defeating Achidna has also been a part of the [Find and Kill Achidna] side quest. If you haven't unlocked this quest yet, it will automatically show up in your quest log, so don't worry about missing the reward.]